@alleycatkate @ginak I am currently on a yearly CT scan schedule, but if no change may extend that time frame. A chest Xray puts out a lot less radiation, but it will probably only show an advanced case of Bronchiectasis/MAC. The chest CTs are really necessary to monitor nodular Bronchiectasis (&MAC). The "low dose CT scans" are used primarily as screening for lung cancer and not as diagnostic as a regular chest CT. There is a chart that compares amounts of radiation for each procedure in this article https://www.health.harvard.edu/cancer/radiation-risk-from-medical-imaging I am not happy about the amount of radiation, but it is a necessary evil IMHO. Bill